Paper-making machinery.



H. F. DUNBAR.

PAPER MAKING MACHINERY. APPLICATION FILED JULY 26,1915.

1 ,1 79,4 11 I Patented Apr. 18, 1916.

4 SHEETS-SHEET l- INVENTOR,

W'TNESS Hamid lib/0m ATTORNEY.

COLUMBIA PLANOGRAPH 330., WASHINGTON, D, C.

H. F. DUNBAR.

PAPER MAKING MACHINERY.

APPLICATION FILED JULY 26. 1915.

' 1,179,41 1. Patnted Apr. 18, 1916.

4 SHEETSSHEET 2.

WITNESS v INVENTOR; I

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THE COLUMBIA PLANOGRAFH (20., WASHINGTON, D. C.

H. F. DUNBAR.

PAPEE? MAKING MACHINERY. APPLICATION FILED JULY 26,1915.

Patented Apr. 18, 1916.

4 SHEETS-SHEET 3.

V. m M mmwm m m WITNESS H. F. DUNBAR. PAPER MAKING MACHINERY.

APPLICATION FILED JULY 26.19I5.

1 179,41 1 Patented Apr. 18, 1916. V

4 SHEETS-SHEET 4.

A TTORNE Y.

THE COLUMBIA PLANOGRAPH co., WASlilNGTd-N. n. C.

UNITED STATES PATENT onmcn HAROLD F. DUNBAR, OF TURNER-S FALLS,MASSACHUSETTS.

PAPER-MAKING MACHIN'EIRY.

Specification of Letters Patent.

Patented Apr. 18, 1916.

Application filed July as, 1915. Serial No. 41,848.

To all whom it may concern:

Be it known that I, HAROLD F. DUN AR, of Turners Falls, county ofFranklin, and State of Massachusetts, have invented certain new anduseful Improvements in Paper-Making Machinery, of which the following isa specification.

This invention relates to improvements in paper making machinery.

The object of the invention is to provide .a device for forming creasesin the paper .ing at that part of the paper making machine toward thelast press rolls; Fig. 2 is a side elevational view showing the end ofthe last press rolls, the paper creasing device and the first drierroll; Fig. 3 is a transverse sectional view on the line 33 looking inthe direction of the arrows and showing the improvement in detail; Fig.4 is a .de-

tail view of the creasing rolls; Fig. 5 is a side elevational view ofthedriving mechanism of the paper creasing device, and Fig. 6 is adetail View of a slight modification of the elastic mounting of theupper creaser roll.

Referring to the drawings in detail: 1 represents the framework of themachine, 2 and 3 the last pair of press rolls that are mounted in theusual manner in the framework of the machine. The upper press roll 2 isprovided with means for exerting a suitable pressure on this roll.

This means comprises upwardly extending shafts 4 to the upper end ofwhich is secured'a hand wheel 5, whereby when the same is rotated theroller 2 can be moved upward. Attached .to the bed portion end of themain frame is an upright 6 which supports an overhanging arm 7 Mountedin this arm and in a similar one at the opposite side of the machine area series of rolls 8 which are designed to support the web of paper,indicated at 9, as it passes to the drier rolls 10. An idler or tensionroll 11 islocated between the last roll 8 and the first of the drierrolls. Each of the rolls 8 are provided with a sprocket wheel 12 overwhich passes a sprocket chain 13. The power for operating the sprocketchain 13 and the web supporting rolls 8 is derived from the sprocketwheel 14 which is secured to a power shaft .15. This shaft is drivenfrom the cone pulley 16 over which passes a belt 17 that is driven fromthe cone pulley 18. This pulley. is mounted on a shaft 19 on the end ofwhich is a pulley 20 which is driven by means of the belt 21. This beltin turn is driven from the large pulley 22 which is secured to the shaft23, that is directly conneoted to the lower press roll 3,'above referredto. The rate of rotation of the rolls 8 is so adjusted by means of thecone pul-' leys so as to be slightly greater than the rate of rotationof the press-rolls 2 and 3.

Referring now to the means for operating the two paper web creaser'rolls24 and 25: 26 designates a belt that is driven from the cone'pulley 27.This belt drives a second cone pulley 28, that is secured to the shaftin turn meshes with the small spur gear 31 and the gear 31 with the gear32 of equal diameter. The shafts 33 and 34 to which the gears 31 and 32are secured extend transversely of the machine in parallel relation withthe press rolls 2 and. 3. The creaser rolls 24 and 25 are thereforedriven at the same speed as the rolls 2 and 3. The shaft 35 is mountedin adjustable boxes 36, depending from the lower side of which are rods37. The lower ends of these rods rest on cams 38 that are secured to ashaft 39. This shaft is provided with a hand wheel 40 whereby when thesame is operated the boxes 36 carrying shaft35 can be raised and loweredas desired.

It will be necessary to depress the lower creaser rolls 25 in order topermit threading the web of paper 9 through the machine.

29 on which is secured a gear 30. This gear The rolls 24 and 25 areprovided with means for laterally adjusting the same on their shafts.The rolls 25 are secured to the shaft .35 by means of the set screws 36,while the roll 24 is, connected to the shaft 34 by means of the spline37. Extending transversely of the machine and above the arm 7 is aconnecting bar 38. Thisbar serves the double purpose of bracing themachine and for supporting a carriage 39" which can be readily locked tothe bar 38 by means of the clamping arm 40 which is attached to atightening screw 4L1. The carriage 39 is slitted as indicated at A2 andis for the purpose of permitting the carriage to be readily clamped tothe connecting bar in order to position the roll 24 with reference tothesheet of paper to be creased. Depending from the carriage 39 arebracket arms 43 in which are pivotally mounted arms 44:. The arms 44.have secured'at their ends pivots A5 to which are secured upwardlyextending arms 4C6 on theend of which a block 47 is secured. In Fig. 6 aslight modification is shown, the arm d4! serving the same purpose asthe arm 44 in Fig. 3-. Located above and below this block arecompression springs 48 and 49. The opposite ends of these springs areprovided with means for adjusting the tension thereof as indicated-bythe threaded rods50 and'51.- The arm 44; oscillatesabout the pivot 52,whereby'when the web of paper is passing through the machine the roller2% can rise and fall in order to compensate for any lrregularitles inthe thickness of the paper.

It should be stated that the'belt' 2l passes attached to this weight isa depending arm to which the weight 21* is attached. It will be seenfrom' this; construction that the paper creasing deviceis locatedbetween the last pair of press rolls'and the first one of the drierrolls. That is to say, the paper is stillin a moist condition when theimpression of the rolls 2-1- and 25 is made in the web'of paper as itpasses through the machine.

I am aware that it is not new to form creases in paper at other pointsin its passage through the paper making machines, but I believe it to benew to locate the creasing rolls at a point inthe passage'or" the webalready referred to.

It willybe observed that the ridges of the creasing rollers 24: and 25are located one above the other in the same vertical planes as clearlyshown in Fig. 4. It will also be observed that on account of the use ofthe large number of rollers 8 the web of paper 9 willapproachthe'creasing rolls 24 and 25 in j a straight, even horizontal run. Thecreasing rolls "24 and 25, it will be observed are located intermediatethe rollers 8.

What I claim is:

1. A device for creasing a web of moving paper while in a moistcondition, comprising, a series of rollers to support the Web of paper,means for rotating said rollers at the same speed as the inoving'web ofrollers, said device being arranged between the last pair of press rollsand the first drier roll of the machine; as" described.

2. A paper creasing device comprising in combination, grooved pressurerollers for engaging the opposite sides of a moving web of paper, shaftsto support said rollers, means for adjusting one of said rollers,comprising pivotally mounted arms attached to its shaft, means toyieldingly support the ends of said arms, said device being-located, asdescribed, betweenthe press rolls and the drier rolls.

3. A paper creasingdevice comprising in combination, grooved pressurerollers for engaging the opposite sides of a movingweb of paper, shaftsto" support said rollers, means for adjusting one of said rollerscomprising pivotally mounted armfs attached to 'its shaft, means toyieldinglysupport the ends of said arms, said device being located, asdescribed, between the press rolls'an'd the drier rolls, ancl'iiieansfor laterally adjusting said rollers relative to the width o f the webof paper.

4. A paper creasing device comprising a series of web" supporting rolls,a pair of creasing rolls, located intermediate the supporting rolls,said rolls being located between the last pair of pressrolls and thefirst drier roll, whereby the paperis'cre'ased while in amoist-condition;

5. A' device for lmpartlngcre'ases'to the.

opposite sides of a moist web-of moving paper and comprlslng a pair ofgrooved rollers, the elevations'or ridges 'of sa'id rollers beingoppositely located and arranged in the same vertical planes, saidrollers being located between the press and" drier" rolls,

and cam devices for-elevating. and "depressing the lower oneofsaidgroovedrollersto permit threading the web ofpa-p'er' through themachine as described.

6. A device for imparting creases tothe opposite sides'of awe'b ofmoving paper comprising, a pair of grooved rollers arranged on theopposite sides" of the web, a plurality of rollers for supporting theweb and arranged in a horizontal lane for causing the web toapproach'the'creasing rollers in a straight line, said creasing'rollerebeing, located-between two'of' the supporting rollers, means foroperating the creasing rollers, means for operating the web-supportingrollers, said devicebeing'located between the lastpair ofpr'ess rollsand the first drier roll.

7. A devicefor imparting creases to the opposite sides of a web of"moving paper comprising a pair of grooved rollers arranged on theopposite sides ofthe web, and in the same vertical plane, a plurality ofrollers for supporting'theweb and arranged in a horizontal plane forcausing theweb to approach the creasing rollers in a straight line, saidcreasing rollers being located between two of the supporting rollers,means for operating the creasing rollers at the same speed as the movingweb of paper, means for operating the web-supporting rolls, asdescribed, said device being located between the last pair of pressrolls and the first drier roll.

8. A device for imparting creases to the opposite sides of a moist webof moving paper and comprising a pair of grooved rollers, the elevationsor ridges of said rollers being oppositely located, said rollers beinglocated between the press and drier rolls,

HAROLD F. DUN BAR.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner or ratentl,

7 Washington, D. G. i

